jQuery效果show（）方法

$("button").click(function(){
    $("p").show();
});
　　

Syntax

$(selector).show(speed,easing,callback)

Parameter	Description
speed	Optional. Specifies the speed of the show effect. Default value is 400 milliseconds Possible values: milliseconds "slow" "fast"
easing	Optional. Specifies the speed of the element in different points of the animation. Default value is "swing" Possible values: "swing" - moves slower at the beginning/end, but faster in the middle "linear" - moves in a constant speed Tip: More easing functions are available in external plugins
callback	Optional. A function to be executed after the show() method is completed To learn more about callback, visit our jQuery Callback chapter

可以在show('fast')添加动画参数，即完成显示的时间